Barrel-filter.



No. 766,597.l

, PATENTED AUG. 18,1903. Gl D. GROVE. BARREL FILTER. K APPLIUATION PimmJAN. e. 190s.

2 SHEETS-SHEET l.

N0 MODEL.

R0. 736,597.' PATRNTRD AUG. 18, 1903.

C. D. GROVE. BARREL FILTER.

APPLIGTION FILED JAN. 6. 1903.

2 SHEETS-SHEET 2.

NO MODEL.

Wiizess es:

no. seater.

iljaTTnn STATES Patented August 1e, 190s.

CLAUDE l). GROVE, OF COLORADO SPRINGS, COLORADO.

BARRELFILTER.

SPECIFICATION forming part of Letters Patent No. 736,597, dated August18, 1903.

Application tiled Janunry', 1903. Serial No. 138.062. (No model.)

.T all whom t may concern:

Be it known that I, CLAUDE D. GROVE, a citizen of the United States, anda resident of Colorado Springs, inthe county of El Paso and State ofColorado, have invented a new and improved Barrel Strainer or Filter, ofwhich the following is a description.

My invention relates to barrel strainers or filters used in straining orfiltering solutions of the precious metals obtained in the treatment ofore by chemical processes, such as bromination or chlorination; and itconsists of certain novel parts andcombinations of parte particularlypointed out in the claims conclndint,r this specification.

Yin the accompanying drawings I have shown my invention embodied in theform which is at present preferred by me; but it will be understood thatvarious modifications and changes may be made in the structure withoutdeparting from the spirit of my 'invention and without exceeding thescope of my claims.

In the accompanying drawings, Figure lis a longitudinal View of a tankor barrel containing a [ilter embodying my invention, the same beingpartly in section and partly in eievation. Fig. 2 is a top view of aportion ofthe strauenbed. Fig. isasection through 2 on the line 3 3.Fin. 4 is a section through liig. on the line 4i, Fig. 5, isa sectionthrough Fig. 2 on the line 5 5.

Similar referencenunierals in the several iignres rerer to the same orcorresponding The following is adescription of the structure illustratedin the said drawings.

5 is aeyiiudrical tank or barrel, preferably composed of an iron shell 66, interiorly coated with a lead sheath 'I'v 7 to resist the action ofthe chemicals used therein;

are trunnions adapted to be mounted stmahie journals and to be providedwith suitable means for revolving the barrel in the usual way when.charged.

S is a manhole provided with Va suitable cover 1i).

11 is inlet-pipecontrolled bya valve12.

1S is ontletvalve controlled by a valve 14.

`iiithin the barrel andat the bottom thereof is located my improvedstrainer. In the form shown in the drawings it is composed of a seriesof lougitudinai planks or strips 15 15 15 15, (although they may bedisposed transversely,) mortised at 16 16 .i6 to make a water-tightjoint between them. Instead of mortises between the planks gaskets,ofasbes tos or other suitable acid-resisting,r material, may beemployedto maintain a tight joint. These planks are preferably made of wood,

acid-resisting material andfon the sides adjacent to the shell of thebarrel rest upon and Vare supported thereby and are preferably made toconform to a greater or less extent with the interior contour thereof orat least to be in contact therewith atasufticient number of points'toafford adequate means of support. On their upper sides they need not beso shaped. The planks 15 are attached to the barrel by means of bolts1.9, passing through the plan ks and through the outside shell ofthebarrel, by means of which they are securely attached to the shell. Theheads of the bolts 19 are provided with caps of some metal or material,such as lead, not acted upon by the chemicals used in the barrel, andsuitable washers (not shown) are empl yed to aiord a tight joint toprevent leakage and to prevent the chemicals gaining access to the shaftof the bolt. Each of these planks 15 is perforated bya series of holesor slits 17. These holes or slits maybe in any desired form orarrangement. ln the drawings I have shown them as longitudinal slits;but the)T` might be formed in any other desired direction or theperforations might be made up of holes instead of slits. or slits aremade of expanding; area from the interior outwardly, as shown in Fig. 5,inmorder that any solid matter' entering from the barrel may readilypass through and be' discharged from them,thus preventinnclogging.

18 represents transverse channelsregistering with each othernd extendingfrom the outermost perforation 17 inwardly. f

19 is a longitudinal main channel with which the lateral channels 18communicate.

20 represents grooves formed in the upper surfaces of the outsideplanks, by means of which fluid which would be retained at the outsideedges of the'planks is drained off and Preferably these holes idischarged through the perforations 17 in a manner which will b greadilyunderstood.

'lhc planks may bc treated with any suit- 6o but they may bemade of anyother light y manhole 9.

able material or solution to resist the action oi' the chemicalsemployed. For example, they may be treated `with any tarry, oily, orwaxy matter, such as coal-tar, linseed-oil, or paraflin.. For furtherreducing the chemical action and abrasion on the top of the tilter theplanks may be coated with a leadsheath 2l, as shown in Fig. 4. By boringdovetail holes or grooves at the outer surface of the planks and thenpouring melted lead or other acid1esistingmetml over the top the planks`.vill be coated with a sheath of metal held in place by lugs which tillthe dovetail holes or grooves. This sheet of lead is then sawcd throughat the slots or punched through at the holes, as will ne readilyunderstood, or staples or similar coutrivances may be driven into theframe and the sheath ot' lead cast around and over them,thus securingthe lead.

in operation the ore to be treated having been suitably crushed orpulverized is introduced into the barrel or cylinder through the Waterand chemicals are then added. The tank is then revolved asul'ticienttime for the chemicals to carry the precious metal into solution, whenthe motion of the cylinder is arrested with the filter at the bottoni,as shown in Fig. l. rihe solid contents of `the barrel then settle ontothe iilter-bed, the largestand heaviest particles settling first on topof the filtering-bed. The holes or slits i7V are small enough to preventthis material passing through them.

The inlet ll now being connected with a waterfsupply under pressure, thecock l2 is opened, as is also the cock ill, the outlet i3 beingconnected with a discharge-pipe. The process of straining or filteringunder pressure then continues in the ordinary way until all the preciousmetal in solution t. removed from the tankf It will be observed that thesolution passing through the'holes or slits v17 gains access to thetransverse channels 18 and is by them conducted tothe main longitudinalchannel 19, which is connected with the dischargepipe 13 and whichchannel is of sul't'icient size to carry oli all solution which willpass through the perforations l?. v

The tilter l have described, and illustrated in the drawings, may becheaply made, is extreme'ly durable, is light in Weight, and does notdisturb the balance ottho tank in rotation,

occupies small space, /and in this sense iucreases the capacity'of thebarrel, and being securely held in place by bolts is not liable to Workloose or to get out of order during operation. Furthermore, the size ofthe iilterbed may easily be regulated (enlarged or diminished) tocontrol the rate of filtering by the addition or subtraction of theplanks i5.

Having thus described my invent-ion in t-he form which l at presentprefer, what l claim, and desirto secure by Letters Patent, is" i. In abarrel-strainer the combinationf. ith the shell thereof,ot` a strainerthe exterior .face of which is in contact with the. barret ts bodyhaving suitable' straining-perforations and beneath its surfaceprojections integral ,therewith and forming channels commun icating withthe discharge-opening, the strainingperforations extending entirelythrough'said projections.

Lt. in a barrel-strainer the combination with the shell thereof, ofastrainerhavingsuitable straining-perforations and beneath itssnrfaceprojections forming channels communicating with thedischarge-opening,the straining-perfoi-ations being of expanding sectionand extending entirely through'said projections.

5. In a barrel-strainer the combination with the shell thereof, ofastrainer composed of a body of wood and a perforated coating ofacidresisting metal directly attached thereto by dowels, rivets, orequivalent means.

v 6. In a barrel-strainer the combination with the shell thereof, ofastraner composed of a perforated body of wood, and a perforated coatingot' acid-resisting metal directly attached thereto by dowels, rivets orequivalent means, the perforations in the body registering with those inthe metal coating.

7. In a barrelstrainer the combination with the shell thereof, of asheet of acid-resisting metal provided with strainingfperforations, anda support therefor containingsimilar perforations'registering with theperforations in the metal sheet.

S. In a barrel-stiainei-,the combina-tion with the shell thereof, ot' astrainer composed of a name to this specification inv the presence oftwo subscribing witnesses.

CLAUDE D. GROVE.

llitnesses:

Husson-EL P. HILDRETH, Jr., .N.. G. HAMMON.

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